Examination
1. The top surface of the cylinder block and the piston bottoms must be clean.
2. Secure the dial indicator to the LRT-12-181 stand and install it on the cylinder block.
3. Set the indicator to "zero".
4. Place the indicator on the piston crown and measure the piston protrusion at two points as shown in the figure. The TDC position is determined by the greatest deviation of the indicator pointer when rocking the crankshaft in both directions. Record the measured piston protrusion value and repeat the procedure for all pistons.
5. The required thickness of the cylinder head gasket is determined by the greatest value of the piston protrusion.
6. When the piston protrusion is up to 0.91 mm, a gasket with one notch is installed.
7. When the piston protrusion is from 0.91 mm to 1.03 mm, a gasket with two notches is installed.
8. If the piston protrusion exceeds 1.03 mm, a gasket with three notches is installed.
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